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Proceedings Paper

Decrease in the uncertainty of laser radiation average power measurement with the aid of discrete Fourier transform
Author(s): Mark L. Gourari; A. A. Kostin; Anatolyi A. Liberman; V. E. Liandres
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Paper Abstract

In this paper, a method of increasing the accuracy and sensitivity of optical radiation average power measurements with the aid of a black body (BB) is proposed and studied experimentally. The essence of the method consists in matched Wiener filtration of the results of measuring the kinetics of BB heating up with the aid of the discrete Fourier transform and the method of least squares when the Fourier spectra of the process under study are compared with a model spectrum. The Fourier spectrum of BB heating up at high levels of optical radiation power (when the BB temperature drift can be neglected) is used as the model one. A decrease in the total uncertainty by a factor of 3 to 5 has been attained at low levels of optical radiation power.

Paper Details

Date Published: 29 July 2002
PDF: 6 pages
Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484583
Show Author Affiliations
Mark L. Gourari, All-Russian Research Institute of Optical and Physical Measurements (Russia)
A. A. Kostin, All-Russian Research Institute of Optical and Physical Measurements (Russia)
Anatolyi A. Liberman, All-Russian Research Institute of Optical and Physical Measurements (Russia)
V. E. Liandres, All-Russian Research Institute of Optical and Physical Measurements (Russia)


Published in SPIE Proceedings Vol. 4900:
Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life

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